Home / 42,781.60-64,165.84-11,609.44

Finding the Fourth Proportional to 42,781.60, 64,165.84 and 11,609.44

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Solution

The fourth proportional to 42,781.60, 64,165.84 and 11,609.44 is: 17,412.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,781.60 : 64,165.84 = 11,609.44 : x
  2. Step 2: Convert to fraction form
    42,781.60/64,165.84 = 11,609.44/x
  3. Step 3: Cross multiply
    42,781.60x = 64,165.84 × 11,609.44
  4. Step 4: Simplify right side
    42,781.60x = 744,929,469.53
  5. Step 5: Solve for x
    x = 744,929,469.53/42,781.60
  6. Step 6: Final answer
    x = 17,412.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.